Accord.Tests.Statistics.RayleighDistributionTest.ConstructorTest2 C# (CSharp) Method

        public void ConstructorTest2()
        {
            var rayleigh = new RayleighDistribution(sigma: 0.42);

            double mean = rayleigh.Mean;     // 0.52639193767251
            double median = rayleigh.Median; // 0.49451220943852386
            double var = rayleigh.Variance;  // 0.075711527953380237
            double mode = rayleigh.Mode;     // 0.42

            double cdf = rayleigh.DistributionFunction(x: 1.4); // 0.99613407986052716
            double pdf = rayleigh.ProbabilityDensityFunction(x: 1.4); // 0.030681905868831811
            double lpdf = rayleigh.LogProbabilityDensityFunction(x: 1.4); // -3.4840821835248961

            double ccdf = rayleigh.ComplementaryDistributionFunction(x: 1.4); // 0.0038659201394728449
            double icdf = rayleigh.InverseDistributionFunction(p: cdf); // 1.4000000080222026

            double hf = rayleigh.HazardFunction(x: 1.4); // 7.9365079365078612
            double chf = rayleigh.CumulativeHazardFunction(x: 1.4); // 5.5555555555555456

            string str = rayleigh.ToString(CultureInfo.InvariantCulture); // Rayleigh(x; σ = 0.42)

            Assert.AreEqual(0.52639193767251, mean);
            Assert.AreEqual(0.42, mode);
            Assert.AreEqual(0.49451220943852386, median, 1e-8);
            Assert.AreEqual(0.075711527953380237, var);
            Assert.AreEqual(5.5555555555555456, chf);
            Assert.AreEqual(0.99613407986052716, cdf);
            Assert.AreEqual(0.030681905868831811, pdf);
            Assert.AreEqual(-3.4840821835248961, lpdf);
            Assert.AreEqual(7.9365079365078612, hf);
            Assert.AreEqual(0.0038659201394728449, ccdf);
            Assert.AreEqual(1.40000000, icdf, 1e-8);
            Assert.AreEqual("Rayleigh(x; σ = 0.42)", str);

            var range1 = rayleigh.GetRange(0.95);
            Assert.AreEqual(0.13452243301684083, range1.Min);
            Assert.AreEqual(1.0280536793538564, range1.Max);

            var range2 = rayleigh.GetRange(0.99);
            Assert.AreEqual(0.059546263061601511, range2.Min);
            Assert.AreEqual(1.2746387879926619, range2.Max);

            var range3 = rayleigh.GetRange(0.01);
            Assert.AreEqual(0.059546263061601677, range3.Min);
            Assert.AreEqual(1.2746387879926619, range3.Max);
        }